DataVXAdvanced Optical MaterialsPaper
journal article·2025-11Open access

Defect Passivation and Emission Enhancement in Pure‐Red Quasi‐2D Perovskite LEDs via Multifunctional Amide Modulation

Xiangfei Liang, Chao Shen, Heyong Wang, Bo Cai, Huanhuan Zhang, Sanfa Xie, Jibin Zhang

Advanced Optical Materials· Volume 13· Issue 33
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Source abstract

Abstract

Abstract Although extensive research has been devoted to composition modulation of quasi‐2D perovskite light‐emitting diodes (PeLEDs) to enhance electroluminescence, achieving an optimal energy landscape for efficient pure‐red emission remains challenging. This is primarily due to the detrimental aggregation of low‐dimensional phases and defects in the perovskite films, which undermines both device efficiency and operational stability. Herein, a multifunctional molecule, 4‐Amino‐benzeneacetamide (4‐AMINO), is introduced to passivate defects and modulate the growth of quasi‐2D perovskites, thereby reducing nonradiative recombination. Benefiting from the favorable properties of 4‐AMINO‐modified perovskites, pure‐red PeLEDs emitting at 632 nm with a peak external quantum efficiency of 10.2% and a maximum brightness of 1351 cd m −2 are achieved. This work presents an effective approach for realizing high‐performance and stable pure‐red PeLEDs toward practical applications.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Intelligent Materials and New Energy Yuzhang Normal University Nanchang 330031 China

College of Physics and Optoelectronic Engineering Jinan University Guangzhou 510632 China

Center for Nano Science and Technology @PoliMi Istituto Italiano di Tecnologia Milan 20133 Italy

State Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials Nanjing University of Posts and Telecommunications Nanjing 210023 China

Key Laboratory of Materials Physics of Ministry of Education School of Physics Zhengzhou University Zhengzhou 450052 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Henan Province · China Postdoctoral Science Foundation

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